Features. V PP IN V CC3 IN V CC5 IN (opt) EN0 EN1 MIC2562

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1 MIC2562A /CardBus Socket Power Controller General Description The MIC2562A (Personal Computer Memory Card International Association) and CardBus power controller handles all PC Card slot power supply pins, both and. The MIC2562A switches between the three voltages (0V, 3.3V and 5.0V) and the voltages (OFF, 0V, 3.3V, 5V or 12.0V) required by PC Cards. The MIC2562A switches voltages from the system power supply to and. Output voltage is selected by two digital inputs each and output current ranges up to 1A for and 250mA for. The MIC2562A provides power management capability controlled by the PC Card logic controller. Voltage rise and fall times are well controlled. Medium current and high current output switches are self-biasing: no +12V supply is required for 3.3V or 5V output. The MIC2562A is designed for efficient operation. In standby (sleep) mode, the device draws very little quiescent current, typically 0.3µA. The device and port is protected by current limiting and overtemperature shutdown. Full crossconduction lockout protects the system power supply during switching operations. The MIC2562A is an improved version of the MIC2562, offering lower on-resistance and a pull-down clamp in the OFF mode. It is available in a 14-pin (0.150") SOIC, and the -1 logic option is also available in 16-pin TSSOP All support documentation can be found on s web site at Features High-efficiency, low-resistance switches require no 12V bias supply No external components required Output current limit and overtemperature shutdown Open-drain flag for error condition indication Ultra-low power consumption Complete PC Card/CardBus and switch matrix in a single package Logic compatible with industry standard PC Card logic controllers No voltage shoot-through or switching transients Break-before-make switching Digital selection of and voltages Over 1A output current Over 200mA output current Pb-free SOIC packages UL recognized, file # Applications PC Card power supply pin voltage switch CardBus slot power supply control Data collection systems Machine control data input systems Wireless communications Bar code data collection systems Instrumentation configuration/datalogging Docking stations (portable and desktop) Power supply management Analog power switching Typical Application 5V System Power Supply 3.3V 12V IN 3 IN 5 IN EN0 EN1 MIC Controller 5_EN 3_EN UL Recognized Component, Inc Fortune Drive San Jose, CA USA tel + 1 (408) fax + 1 (408) June M

2 Ordering Information (1) Part Number Temperature Range Package Pb-Free MIC2562A-0BM 40 C to +85 C 14-pin Narrow SOIC MIC2562A-1BM 40 C to +85 C 14-pin Narrow SOIC MIC2562A-0YM 40 C to +85 C 14-pin Narrow SOIC X MIC2562A-1YM 40 C to +85 C 14-pin Narrow SOIC X MIC2562A-1BTS 40 C to +85 C 16-pin TSSOP MIC2562A-1YTS 40 C to +85 C 16-pin TSSOP X Note. 1. See MIC2562A-0 Control Logic table for a description of the differences between the logic options. Pin Configuration VCC5_EN 1 16 GND VCC5_EN 1 14 GND VCC3_EN 2 15 VCC5 IN VCC3_EN 2 13 VCC5 IN * 3 14 VCC OUT * 3 12 VCC OUT * 4 13 VCC5 IN * 4 11 VCC5 IN /FLAG 5 12 VCC OUT /FLAG 5 10 VCC OUT VPP IN 6 11 VCC3 IN VPP IN 6 9 VCC3 IN NC 7 10 NC VPP OUT 7 8 VCC OUT VPP OUT 8 9 VCC OUT * See table below 14-Pin SOIC (M) Both 5 IN pins must be connected. All three OUT pins must be connected. MIC2562A Pin Assignments Pin EN0 _VCC 4 EN1 _PGM * See table below 16-Pin TSSOP (TS) Both 5 IN pins must be connected. All three OUT pins must be connected. MIC2562A Pin Assignments Pin EN0 _VCC 4 EN1 _PGM June M

3 Absolute Maximum Ratings (1) Supply Voltage, IN...+15V 3 IN V 5 IN V FLAG Pull-up Voltage V Logic Input Voltages V to +10V Output Current (each output) OUT... >200mA, Internally Limited OUT... >1A, Internally Limited Power Dissipation (P D ), T A 25 C... Internally Limited SOIC mW Lead Temperature (5 sec.) C Storage Temperature (T S ) C to +150 C Electrical Characteristics (3) Over operating temperature range with 3 IN = 3.3V, 5 IN = 5.0V, IN = 12V; T A = 25 C, bold values indicate 40 C T A +85 C; unless noted. Symbol Parameter Condition Min Typ Max Units Digital Inputs V IH Logic 1 Input Voltage V V IL Logic 0 Input Voltage V I IN Input Current 0V < V IN < 5.5V ±1 µa Output I PP OUT High Impedance Output Shutdown Mode 1 10 µa Hi-Z Leakage Current 0 OUT 12V I PPSC Short Circuit Current Limit OUT = A R O Switch Resistance Select OUT = 5V Ω Select OUT = 3.3V Ω I PP OUT = 100mA (Sourcing) R O Switch Resistance, IN = 12V Ω Select OUT = 12V I PP OUT = 100mA (Sourcing) R O Switch Resistance, Select OUT = clamped to ground Ω Select OUT = 0V I PP OUT = 50µA (Sinking) Switching Time (See Figure 1) Operating Ratings (2) t 1 Output Turn-On Delay (4) OUT = Hi-Z to 10% of 3.3V 5 50 µs t 2 OUT = Hi-Z to 10% of 5V µs t 3 OUT = Hi-Z to 10% of 12V µs t 4 Output Rise Time (4) OUT = 10% to 90% of 3.3V µs t 5 OUT = 10% to 90% of 5V µs t 6 OUT = 10% to 90% of 12V µs t 7 Output Transition Timing (4) OUT = 3.3V to 90% of 12V µs t 8 OUT = 5V to 90% of 12V µs t 9 OUT = 12V to 90% of 3.3V µs t 10 OUT = 12V to 90% of 5V µs t 14 Output Turn-Off Delay Time (4) OUT = 3.3V to Hi-Z ns t 15 OUT = 5V to Hi-Z ns t 16 OUT = 12V to Hi-Z ns Notes: 1. Exceeding the absolute maximum rating may damage the device. 2. The device is not guaranteed to function outside its operating rating. Devices are ESD sensitive. Handling precautions recommended. 3. Specification for packaged product only. 4. R L = 100Ω connected to ground. Ambient Temperature (T A ) C to +85 C Operating Temperature (Die) C Package Thermal Resistance (θ JA ) SOIC C/W TSSOP... (4 layer board) 83 C/W June M

4 Symbol Parameter Condition Min Typ Max Units Switching Time (See Figure 1) Continued t 11 Output Turn-Off Fall Time (4) OUT = 90% to 10% of 3.3V ns t 12 OUT = 90% to 10% of 5V ns t 13 OUT = 90% to 10% of 12V ns Output I CCSC Short Circuit Current Limit OUT = A R O Switch Resistance Select OUT = 3.3V mω I CC OUT = 1A (Sourcing) Select OUT = 5V mω I CC OUT = 1A (Sourcing) Select OUT = clamped to ground Ω I CC OUT = 0.1mA (Sinking) Switching Time (See Figure 2) t 1 Output Turn-On Delay Time (5) OUT = 0V to 10% of 3.3V µs t 2 OUT = 0V to 10% of 5.0V µs t 3 Output Rise Time (5) OUT = 10% to 90% of 3.3V µs t 4 OUT = 10% to 90% of 5V µs t 7 Output Turn-Off Delay (5, 6) OUT = 3.3V ms t 8 OUT = 5V ms t 5 Output Fall Time (5) OUT = 90% to 10% of 3.3V µs t 6 OUT = 90% to 10% of 5.0V µs Power Supply I CC5 5 IN Supply Current (5V) OUT = 5V or 3.3V, I CC OUT = µa OUT = 0V (Sleep Mode) µa I CC3 3 IN Supply Current (3.3V) (7) OUT = 5V or 3.3V, I CC OUT = µa OUT = 0V (Sleep Mode) µa I PP IN IN Supply Current (12V) (8) OUT = 3.3V or 5V. I PP OUT = µa OUT = Hi-Z, 0 or µa 5 Operating Input Voltage (5V) 5 IN not required for operation V 3 Operating Input Voltage (3.3V) Note V IN Operating Input Voltage (12V) IN not required for operation (9) V Thermal Shutdown T SD Thermal Shutdown Temperature 130 C FLAG Output V O OK FLAG Threshold Voltage (10) FLAG High (OK) Threshold Voltage 1 V 1 Notes: 4. R L = 100Ω connected to ground. 5. R L = 10Ω connected to ground. 6. Delay from commanding Hi-Z or 0V to beginning slope. Does not apply to current limit or overtemperature shutdown conditions. 7. The MIC2562A uses 3 IN for operation. For single 5V supply systems, connect 5V to both 3 IN and 5 IN. See Applications Information section for further details. 8. IN is not required for operation. 9. IN must be either high impedance or greater than or approximately equal to the highest voltage in the system. For example, if both 3.3V and 5V are connected to the MIC2562A, IN must be either 5V, 12V, or high impedance. 10. A 10kΩ pull-up resistor is connected between FLAG and 3 IN. June M

5 t 3 t 7 t 5 MIC2562A A B C D E F G H J K Enable 0 to 3.3V to 12V to 3.3V OFF to 5V to 12V to 5V OFF to 12V OFF t 13 t 7 t 9 t 8 t 10 t 6 t 16 12V Output t 2 t 4 t 1 t 11 t 5 t 15 t 12 t 3 5V 3.3V t 14 0 /FLAG Figure 1. MIC2562A Timing Diagram Enable is shown generically: refer to the timing tables. At time A, = 3.3V is selected. At B, is set to 12V. At C, = 3.3V (from 12V). At D, is disabled. At E, is programmed to 5V. At F, is set to 12V. At G, is programmed to 5V. At H, is disabled. At J, is set to 12V. And at K, is again disabled. R L = 100Ω for all measurements. Load capacitance is negligible. A B C D Enable to 3.3V OFF to 5V OFF 0 t 1 t 2 t 8 t 6 5V t 4 3.3V Output 0 /FLAG 0 Figure 2. MIC2562A Timing Diagram Enable is shown generically: refer to the timing tables for specific control logic input. At time A, is programmed to 3.3V. At B, is disabled. At C, is programmed to 5V. And at D, is disabled. R L = 10Ω. FLAG pull-up resistor is 10kΩ to 3 IN. June M

6 MIC2562A-0 Control Logic Table 5_EN 3_EN EN1 EN0 OUT OUT Clamped to Ground High-Z Clamped to Ground High-Z Clamped to Ground High-Z Clamped to Ground Clamped to Ground High-Z Clamped to Ground High-Z Clamped to Ground High-Z Clamped to Ground MIC2562A-1 Control Logic Table (compatible with Cirrus Logic CL-PD6710 & PD672x-series Controllers) VCC5_EN VCC3_EN VPP_PGM VPP_VCC VCC OUT VPP OUT Clamped to Ground Clamped to Ground Clamped to Ground High-Z Clamped to Ground High-Z Clamped to Ground High-Z Clamped to Ground High-Z Clamped to Ground High-Z Clamped to Ground Clamped to Ground Clamped to Ground High-Z Clamped to Ground High-Z Clamped to Ground High-Z June M

7 Logic Block Diagram IN (optional) EN1 EN0 OUT 5_EN MIC2562 Control Logic 3_EN OUT /FLAG 3 IN 5 IN I LIMIT / Thermal Shutdown Gate Drive Generator June M

8 Applications Information PC Card and control is easily accomplished using the MIC2562A PC Card/CardBus slot and power controller IC. Four control bits determine OUT and OUT voltage and standby/operate mode condition. outputs of 3.3V and 5V at the maximum allowable PC Card current are supported. OUT output voltages of (3.3V or 5V),, 0V, or a high impedance state are available. When the clamped to ground condition is selected, the device switches into sleep mode and draws only nanoamperes of leakage current. An error flag alerts the user if the output voltage is too low because of overtemperature or overcurrent faults. Protection from hot switching is provided which prevents feedback from the OUT (from 5V to 3.3V, for example), by locking out the low-voltage switch until the initial switch s gate voltage drops below the desired lower. The MIC2562A operates from the computer system s main power supply. Device logic and internal MOSFET drive is generated internally by charge pump voltage multipliers powered from 3 IN. Switching speeds are carefully controlled to prevent damage to sensitive loads and meet all PC Card specification speed requirements. Supply Bypassing External capacitors are not required for operation. The MIC2562A is a switch and has no stability problems. For best results however, bypass 3 IN, 5 IN, and IN inputs with 1µF capacitors to improve output ripple. As all internal device logic and comparison functions are powered from the 3 IN line, the power supply quality of this line is the most important, and a bypass capacitor may be necessary for some layouts. Both OUT and OUT pins may use 0.01µF to 0.1µF capacitors for noise reduction and electrostatic discharge (ESD) damage prevention. Larger values of output capacitors are not necessary. PC Implementation The MIC2562A is designed for full compatibility with the PC Card Specification (March 1995), including the CardBus option. One MIC2562A is required for each PC Card slot. When a memory card is initially inserted, it should receive (either 3.3V ± 0.3V or 5.0V ±5%). The initial voltage is determined by a combination of mechanical socket keys and voltage sense pins. The card sends a handshaking data stream to the controller, which then determines whether or not this card requires and if the card is designed for dual. If the card is compatible with and desires a different level, the controller commands this change by disabling, waiting at least 100ms, and then re-enabling the other voltage. switches are turned ON and OFF slowly. If commanded to immediately switch from one to the other (without turning OFF and waiting 100ms first), enhancement of the second switch begins after the first is OFF, realizing breakbefore-make protection. switches are turned ON slowly and OFF quickly, which also prevents cross conduction. If no card is inserted or the system is in sleep mode, the slot logic controller outputs a (3 IN, 5 IN) = (0,0) to the MIC2562A, which shuts down. This also places the switch into a high impedance output shutdown (sleep) mode, where current consumption drops to nearly zero, with only tiny CMOS leakage currents flowing. Internal device control logic, MOSFET drive and bias voltage is powered from 3 IN. The high voltage bias is generated by an internal charge pump quadrupler. Systems without 3.3V may connect 3 IN to 5V. Input logic threshold voltages are compatible with common PC Card logic controllers using either 3.3V or 5V supplies. The PC Card specification defines two supply pins per card slot. The two supply pins may be programmed to different voltages. is primarily used for programming Flash memory cards. Implementing two independent voltages is easily accomplished with the MIC2562A and a MIC2557 switching matrix. Figure 3 shows this full configuration, supporting independent and both 5.0V and 3.3V operation. However, few logic controllers support multiple most systems connect 1 to 2 and the MIC2557 is not required. This circuit is shown in Figure 4. During flash memory programming with standard (+12V) flash memories, the PC Card slot logic controller outputs a (0,1) to the EN0, EN1 control pins of the MIC2562A, which connects IN (nominally +12V) to OUT. The low on resistance of the MIC2562A switch allows using a small bypass capacitor on the OUT pins, with the main filtering action performed by a large filter capacitor on IN (usually the main power supply filter capacitor is sufficient). Using a small-value capacitor such as 0.1µF on the output causes little or no timing delays. The OUT transition from to 12.0V typically takes 250µs. After programming is completed, the controller outputs a (EN1, EN0) = (0,1) to the MIC2562A, which then reduces OUT to the level. Break-before-make switching action and controlled rise times reduces switching transients and lowers maximum current spikes through the switch. Figure 5 shows MIC2562A configuration for situations where only a single +5V is available. Output Current and Protection MIC2562A output switches are capable of passing the maximum current needed by any PC Card. The MIC2562A meets or exceeds all specifications. For system and card protection, output currents are internally limited. For full system protection, long term (millisecond or longer) output short circuits invoke overtemperature shutdown, protecting the MIC2562A, the system power supplies, the card socket pins, and the PC Card. A final protective feature is the error FLAG, which signals the PC Card slot logic controller when a fault condition exists, allowing the controller to notify the user that the card inserted has a problem. The open-drain FLAG monitors the voltage level on both OUT and OUT and activates (pulls low) when either output is 1V below its programmed level or an overtemperature fault exists. This FLAG signals output voltage transitions as well as fault conditions. Refer to Figures 1 and 2 for details. June M

9 5V System Power Supply 3.3V 12V IN 3 IN 5 IN EN0 1 2 EN1 MIC2562 Controller 5_EN 3_EN IN V DD EN0 EN1 OUT MIC2557 Figure 3. MIC2562A PC Power Control Application with Dual (5V and 3.3V) and Separate 1 and 2 System Power Supply 5V 3.3V 12V IN 3 IN 5 IN EN0 EN1 MIC Controller 5_EN 3_EN Figure 4. Typical MIC2562A PC Power Control Application with Dual (5V and 3.3V) Note: 1 and 2 are driven together. June M

10 System Power Supply 5V 12V IN 3 IN 5 IN EN0 EN1 MIC Controller 5_EN 3_EN Figure 5. PC Power Control Application Without an Available 3.3V Note: 3 IN and 5 IN are driven together. The MIC2562A is powered by the 3 IN line. In this configuration, OUT will be 5V when either 3 or 5 is enabled from the logic table. Take advantage of the lower switch resistance of the 5 switch by using the 5_EN control as your main switch. June M

11 Package Information PIN (3.90) DIMENSIONS: INCHES (MM) (0.65) MAX) (1.27) TYP (0.40) TYP (0.15) (4.90) (1.45) (1.25) (8.75) (8.55) SEATING PLANE (6.20) (5.80) 14-Pin Narrow SOIC (M) Rev Pin TSSOP (TS) June M

12 MICREL, INC FORTUNE DRIVE SAN JOSE, CA USA TEL + 1 (408) FAX + 1 (408) WEB The information furnished by in this data sheet is believed to be accurate and reliable. However, no responsibility is assumed by for its use. reserves the right to change circuitry and specifications at any time without notification to the customer. Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product can reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical implant into the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A Purchaser s use or sale of Products for use in life support appliances, devices or systems is at Purchaser s own risk and Purchaser agrees to fully indemnify for any damages resulting from such use or sale. 2004, Incorporated. June M

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